2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)最新文献_第8页

Space Charge Characteristics of Oil-paper under AC/DC Composite Voltage 交直流复合电压下油纸的空间电荷特性

2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2020-10-18 DOI: 10.1109/CEIDP49254.2020.9437530

Yuanxiang Zhou, Xin Huang, Ling Zhang, Yunxiao Zhang, Zhongliu Zhou, Chenyuan Teng, Lei Xue, Meng Huang

{"title":"Space Charge Characteristics of Oil-paper under AC/DC Composite Voltage","authors":"Yuanxiang Zhou, Xin Huang, Ling Zhang, Yunxiao Zhang, Zhongliu Zhou, Chenyuan Teng, Lei Xue, Meng Huang","doi":"10.1109/CEIDP49254.2020.9437530","DOIUrl":"https://doi.org/10.1109/CEIDP49254.2020.9437530","url":null,"abstract":"Oil-paper insulation bears AC/DC composite voltage in converter transformers. However, the AC/DC space charge behavior is still not clear, which will result in electric field distortion, material aging and even insulation failure. In this work, the space charge distribution of oil-paper under the AC/DC composite voltage with the AC/DC ratio of 1:1, 1:3, 1:5, and 1:7, is studied by pulse electroacoustic (PEA) method, respectively. It was found that as DC component increases, the accumulated charge near the electrode decreases, while the interior charge increases. It suggests that DC stress mainly influences the amount and the depth of space charge accumulation. AC component has a relatively significant impact on the injection and extraction behavior of space charge near the electrode. Furthermore, AC/DC composite voltage enhances the migration of space charge compared with that under DC voltage. This research contributes to the further understanding of the space charge characteristics of oil-paper under AC/DC composite voltage, which will benefit the safe and stable operation of converter transformers.","PeriodicalId":170813,"journal":{"name":"2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116940097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Very Light Pollution DC Flashover Characteristics of Short Samples of Polymer Insulators 聚合物绝缘子短样品的极轻污染直流闪络特性

2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2020-10-18 DOI: 10.1109/CEIDP49254.2020.9437486

M. Amer, J. Laninga, W. McDermid, D. Swatek, B. Kordi

{"title":"Very Light Pollution DC Flashover Characteristics of Short Samples of Polymer Insulators","authors":"M. Amer, J. Laninga, W. McDermid, D. Swatek, B. Kordi","doi":"10.1109/CEIDP49254.2020.9437486","DOIUrl":"https://doi.org/10.1109/CEIDP49254.2020.9437486","url":null,"abstract":"Continuity of electric power transportation is an essential goal for power distribution companies to avoid revenue losses. Nowadays, the existing good insulation systems besides live-line maintenance procedures can secure this target. However, the pollution traces over insulating surface may cause the failure of power transmission systems. This research aims to find to what extent is the effect of very light pollution severity on the flashover performance of polymeric insulators under DC voltages. Two insulating materials are employed in this research, fiberglass reinforced plastic (FRP) and high temperature vulcanized silicone rubber (HTV-SiR). The sample's lengths are 130 mm and their diameters are 32 mm. The artificial pollution tests are performed according to the IEC 507 clean fog test method and the flashover voltage is determined by applying the up-and-down method technique. The results show that the pollution flashover voltage decreases as the pollution severity increases and is dramatically decreased as compared to the DC flashover voltage of clean samples. Moreover, the effect of equivalent salt deposit density (ESDD) on the 50% flashover voltage of the two materials is expressed as a power function. The pollution flashover voltage gradient of HTV-SiR samples is found to be better than that of FRP materials. It is highly recommended to wipe the hot sticks with silicone wiping clothes before and after the maintenance work to remove the very light pollution layers and provide the FRP surface with a layer of silicone which increases its flashover performance. These recommendations will promote the followed procedures for live-line maintenance to preserve crew's life from unintentional accidents.","PeriodicalId":170813,"journal":{"name":"2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"2 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120809531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface Discharge Characteristics under Different Rise Times and Fall Times of Positive Repetitive Square Voltage using Pulse Sequence Analysis 脉冲序列分析正重复平方电压不同上升和下降次数下的表面放电特性

2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2020-10-18 DOI: 10.1109/CEIDP49254.2020.9437516

Xiangrui Meng, Xuebao Li, Ye Li, Zhibin Zhao, X. Cui

引用次数: 0

Protection of Carbon Fiber Reinforced Polymer Matrix (CFRP) Composite Laminate Against Lightning Strike Using Nano-Fillers 纳米填料对碳纤维增强聚合物基(CFRP)复合材料层压板的雷击防护

2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2020-10-18 DOI: 10.1109/CEIDP49254.2020.9437508

K. Yousefpour, Wenhua Lin, Yeqing Wang, Chanyeop Park

{"title":"Protection of Carbon Fiber Reinforced Polymer Matrix (CFRP) Composite Laminate Against Lightning Strike Using Nano-Fillers","authors":"K. Yousefpour, Wenhua Lin, Yeqing Wang, Chanyeop Park","doi":"10.1109/CEIDP49254.2020.9437508","DOIUrl":"https://doi.org/10.1109/CEIDP49254.2020.9437508","url":null,"abstract":"Carbon Fiber Reinforced Matrix (CFRP) composites are promising alternatives of metal panels for various industries owing to their advantages. However, one of the main disadvantages of using CFRP composites compared to metal panels is their susceptibility to lightning strike, which is mainly due to the low electrical conductivity of resins used as the matrix for binding the carbon fiber fabrics. Since the low electrical conductivity causes substantial amount of Joule heating that damages CFRP composites, increasing the conductivity of the material would reduce the damage causes by lightning strikes. Nano-fillers such as Carbon Black (CB) and Carbon Nanotubes (CNT) are materials that can enhance the electrical conductivity of CFRP composites. A thorough understanding on impact of conductive nanofillers on the lightning strike damage characteristics is necessary for potentially reducing the lightning strike damage of the CFRP composites. There are numerous research groups that investigated the effect of adding the conductive materials to reduce the damage of lightning strike, but the ideal composition of the material for CFRP composites has not been determined yet.","PeriodicalId":170813,"journal":{"name":"2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116626541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Partial Discharge Test Specimen for Insulation Diagnosis Using Radio Interferometer System 用无线电干涉仪系统进行绝缘诊断的局部放电试样

2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2020-10-18 DOI: 10.1109/CEIDP49254.2020.9437450

R. Ikeda, S. Ota, M. Aiba, Ken Watanabe

引用次数: 1

Fabrication and PD-initiated Breakdown of Simulated Mica Tape Insulation Containing Epoxy Nanocomposites 含环氧纳米复合材料模拟云母带绝缘的制备及pd引发击穿

2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2020-10-18 DOI: 10.1109/CEIDP49254.2020.9437432

T. Iizuka, Xuping Liu, Jun Mai, K. Tatsumi, Toshikatsu Tanaka, T. Mabuchi, Xiaohong Yin, T. Umemoto, H. Muto

引用次数: 0

Effect of Pressure and Temperature on Dielectric Response of Silicone Composites 压力和温度对有机硅复合材料介电响应的影响

2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2020-10-18 DOI: 10.1109/CEIDP49254.2020.9437515

K. Khanum, Arathi Mohan Sharma, S. Jayaram

引用次数: 0

Sandwiched Barium Titanate/Polyamideimide Nanocomposite for Dielectric Energy Storage 钛酸钡/聚酰胺亚胺纳米复合材料的介电储能研究

2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2020-10-18 DOI: 10.1109/CEIDP49254.2020.9437377

Yifei Wang, Yang Cao

{"title":"Sandwiched Barium Titanate/Polyamideimide Nanocomposite for Dielectric Energy Storage","authors":"Yifei Wang, Yang Cao","doi":"10.1109/CEIDP49254.2020.9437377","DOIUrl":"https://doi.org/10.1109/CEIDP49254.2020.9437377","url":null,"abstract":"Electrical insulation represents a critical application for polymers in electric and electronic power systems. Polymer based dielectrics with highly insulating capability combined with remarkable high permittivity are promising candidates for electrostatic energy storage in electronic power systems. Constructing polymer nanocomposites by introducing inorganic nano fillers with high permittivity in polymer matrix has been recognized as an effective way to achieve enhanced energy density, while, however, the fillers could provide conductive paths for charge carriers, thus leading to the increase of electrical conduction. It is found that layered structure design enables polymer nanocomposites with much enhanced breakdown strength and suppressed leakage current, compared with traditional single-layered counterparts. In this work, we manufactured a barium titanate/polyamideimide composite film with a sandwiched structure. In this structure, the middle layer containing ceramic nanoparticles are clapped between two pristine polymer layers, which prevent charges that are injected from electrodes to go through the film. Significantly enhanced charge-discharge efficiency and energy density is obtained through this structural design, which can enable a wide range of polymers for the improvement of energy storage performance.","PeriodicalId":170813,"journal":{"name":"2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124019582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Insulation properties of PP based copolymer with polar group and inorganic filler 极性基与无机填料PP基共聚物的绝缘性能

2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2020-10-18 DOI: 10.1109/CEIDP49254.2020.9437564

Kouta Hashimoto, N. Oshima, H. Miyake, Y. Tanaka

引用次数: 0

Mechanisms Governing Longitudinal AC Breakdown at Solid-Solid Interfaces 固-固界面纵向交流击穿控制机制

2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2020-10-18 DOI: 10.1109/CEIDP49254.2020.9437443

Emre Kantar

引用次数: 2